Four U.S. swimmers were robbed at gunpoint after a night out in Rio

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Usain Bolt of Jamaica strikes his "Lightening Bolt" pose after winning the Men's 100m final at the Olympic Stadium on Aug. 14, 2016 in Rio de Janeiro, Brazil.

Usain Bolt stayed the Fastest Man in the World, doping bickering continued and tennis star Andy Murray made history. In case you missed them, here are some memorable moments from Day 9 of the Rio Games.

The Fastest ManJamaica's Bolt, who has not lost an Olympic race since 2008, won the 100 meters on Sunday, the third time in three straight Olympics, in 9.81 seconds.

"I came to this Olympics to win three gold medals. I came to prove myself again as one of the greats and that's my focus," Bolt told reporters after his win.

Gatlin has the fastest 100 meter of the 2016 season at 9.80 seconds. Bolt’s fastest time this season had been 9.88 seconds.

Doping Bickering ContinuesRussia's top Olympic official called U.S. swimmer Lilly King a "little girl" in a rebuke for her criticism of her Russian rival Yulia Efimova, after the two women clashed over Efimova's doping ban.

Efimova was suspended for 16 months for doping and more recently tested positive for the now-banned substance meldonium.

Their spat began with a finger wagging by Efimova, signaling that she was number one. King did not approve, which she made clear after she beat Efimova for the gold medal in the 100-meter breaststroke on Monday.

"It just proves you can compete clean and still come out on top with all the hard work you put in behind the scenes, behind the meet, at practice and weight sessions," she said. "There is a way to become the best and do it the right way."

Her comment prompted this retort from the head of the Russian Olympic Committee, Alexander Zhukov:

Lilly King of USA celebrates winning the gold medal while Yulia Efimova of Russia looks on in the women's 100m breaststroke final on day 3 of the Rio 2016 Olympic Games at Olympic Aquatics Center on August 8, 2016 in Rio de Janeiro, Brazil.
Photo credit: Getty Images

King also criticized the American sprinter, Justin Gatlin, for his doping past when she was asked if it was fair that athletes like Gatlin be allowed to participate.

"Do I think people who have been caught doping should be on the team? They shouldn't. It is unfortunate we have to see that," King said.

Gatlin responded: "I don't even know who Lilly King is."

Gatlin was suspended twice for using performance-enhancing drugs. He was banned in 2001 for a year, and again in 2006 for four years, which kept him from competing at the 2008 Beijing Olympics.

"I've worked hard, all the way from the bottom when I had nothing," Gatlin told The Associated Press. "I worked hard to work back to where I'm at now. I don't understand. The system has worked. I think people need to stop looking at trying to be the judge, the jury and executioner and let the system do its job."

An Olympic RingChinese diver He Zi had just received the silver medal for the 3-meter springboard when fellow diver Qin Kai approached her poolside in front the stadium and -- as the crowd cheered -- got down on one knee and offered an engagement ring. Wiping away tears, she said yes to his proposal and he slipped the ring on her finger.

Olympic volunteer Marjorie Edna proposed to her girlfriend -- Brazilian rugby player Isadora Cerullo -- on the pitch last week after a game.

Robbed at GunpointU.S. swimmer Ryan Lochte and three teammates were robbed at gunpoint in Rio de Janeiro overnight Saturday.

"We got pulled over, in the taxi, and these guys came out with a badge, a police badge, no lights, no nothing just a police badge and they pulled us over," Lochte told Today's Billy Bush. "They pulled out their guns, they told the other swimmers to get down on the ground — they got down on the ground. I refused, I was like we didn't do anything wrong, so — I'm not getting down on the ground.

"And then the guy pulled out his gun, he cocked it, put it to my forehead and he said, 'Get down,' and I put my hands up, I was like 'whatever.' He took our money, he took my wallet — he left my cell phone, he left my credentials."

Lochte's comments came after conflicting reports about the robbery. The International Olympic Committee initially denied it took place while his mother was telling news organization that the robbery happened at a party.

Lochte won a gold medal in the 4X200-meter freestyle relay.

Crime has been a worry at the Rio Games. The Portuguese sports minister and Australian coaches were robbed at knifepoint, a Brazilian security officer was shot in the head and killed when he took a wrong turn, and a stray bullet landed in an equestrian press conference.

Olympics Are a Family AffairSisters! Two sets ran the Olympic marathon -- twins Anna and Lisa Hahner of Germany, who finished the race holding hands and triplets Leila, Liina and Lily Luik of Estonia, who danced in celebration after the race.